legacy tests: migrate test4
legacy tests: migrate test102
legacy tests: migrate test9
legacy tests: migrate test22
legacy tests: migrate test106
legacy tests: migrate test18
legacy tests: migrate test_options
legacy tests: migrate test_insertcount
legacy tests: migrate test_utf8
legacy tests: migrate test81
legacy tests: migrate test_changelist
legacy tests: migrate test_autoformat_join
legacy tests: migrate test21
legacy tests: migrate test56
Clean vim registers before each test.
legacy tests: migrate test23
Use os.remove instead of 'call delete()'
legacy tests: migrate test41
Delete functions before each test.
Add eval workaround to request helper method